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Biomedical subjects

A Strano

Publications and source records attributed to A Strano.

At least 91 records · Page 5Linked to original sources
PubMed1985

Calf blood flow and vascular resistance in middle-aged and elderly hypertensives.

Hypertension is associated with increased total peripheral vascular resistance. Calf blood flow and vascular resistance in two groups of hypertensives of different age has been evaluated: 85 middle-aged hypertensives (MH) and 25 elderly hypertensives (EH), and in two groups of 20 normotensive control subjects of similar age. Calf blood flow at rest (RF) and after ischaemia (PF) was determined by strain-gauge plethysmography. Basal (BVR) and minimal (MVR) vascular resistance were obtained by the mean blood pressure (MBP):RF and MBP:PF ratio. Blood flow at rest was reduced only in EH, while PF was significantly lower in MH and in EH in comparison with the respective controls. In parallel, BVR and MVR were higher in MH and in EH compared with controls. The increase of BVR and of MVR was more evident in EH. These results suggest that in EH there is an impairment of the calf maximal vasodilatation capacity, probably due to the long duration of hypertension.

Adolescent↗
PubMed1985

[Evaluation of blood viscosity and erythrocyte filterability in chronic ischemic heart disease].

In 40 patients suffering from chronic ischemic heart disease (16 with history of myocardial infarction, 10 with unstable angina and 14 with stable angina) and in an equal number of sex-and age-matched control subjects, we have determined plasma and blood viscosity according to RAND et al. using a Wells-Brookfield Micro-Viscometer, shear rate 230 sec-1, and red cell filterability according to REID et al. Significant differences were found in patients suffering from ischemic heart disease, in comparison with the control group, for blood viscosity (p less than 0.01), plasma viscosity (p less than 0.001) and red cell filterability (p less than 0.001). The changes of hemorheological parameters in ischemic heart disease, especially in patients suffering from unstable angina and in those with history of myocardial infarction, point to the opportunity of a pharmacological treatment aiming at improving the district microcirculation.

Adult↗
PubMed1984

Double-blind, crossover study of the clinical efficacy and the hemorheological effects of pentoxifylline in patients with occlusive arterial disease of the lower limbs.

The effect of a 3 month daily administration of 800 mg pentoxifylline (Trental 400 bds) or placebo was assessed under double blind crossover design in 18 patients (12 males and 6 females) with peripheral occlusive arterial disease in respect of painfree walking distance and various hemorheological and hemostasiological variables, platelet aggregation, serum cholesterol and triglycerides. In first treatment period walking distance significantly increased with pentoxifylline by 46% from baseline 121 +/- 15 m and by 4% with placebo from baseline 134 +/- 18 m. Pentoxifylline administration furthermore yielded significant decrease in whole blood and plasma viscosity and significant increase in erythrocyte deformability. This was paralleled by distinct reduction of fibrinogen, platelet aggregation and euglobulin lysis time, also plethysmographic variables showed positive changes pointing to improvement of limb perfusion. The results of the study suggest that treatment of peripheral occlusive vascular disease by a drug improving blood fluidity through correction of hemorheological and hemostasiological factors turns especially promising and beneficial since the action centers finally on the languishing microcirculation in the ischemic tissue.

Adenosine Diphosphate↗